doc: release: 4.2: Fix entry in new APIs

Add a missing newline to fix the formatting of the LoRaWAN entry.

Signed-off-by: Pieter De Gendt <[email protected]>

Author: pdgendt

doc/releases/release-notes-4.2.rst

@@ -317,6 +317,7 @@ New APIs and options
     * :kconfig:option:`CONFIG_LV_Z_COLOR_MONO_HW_INVERSION`
 
 * LoRaWAN
+
    * :c:func:`lorawan_request_link_check`
 
 * Management